Deadly Premonition. Easily dismissed as a budget title, but give it a couple of hours and it's got a great plot, great characters, loads of interesting gameplay elements, plenty of longevity, yadda yadda I could rant for a while. Jim Sterling's review at Destructoid, as well as being funny, is pretty accurate.
If you are open to the darkly comic / ridiculous, are not an complete A/V snob, and like good games, I cannot recommend it enough.